Battery Powered Lady Engine is compatible with the Thomas Wooden Railway train sets and engines. With 4-wheel drive and a magnet on the back, Lady can steam around the track pulling plenty of passenger or cargo cars! Lady is a very special engine from Muffle Mountain, who holds the secret to the Magic Railroad in Thomas the Train's theatrical debut, Thomas and the Magic Railroad. Battery Powered Lady the Train features an easy-to-push start and stop button, sturdy diecast metal construction, and a free wheeling feature that allows for non-battery play. Lady requires 1 AA battery, not included. Battery Powered Lady is compatible with the Thomas Wooden Railway, BRIO, Lionel Express Track and most other wooden railway systems.